c - Do and While Loop -
in program, suppose let user input data, , program calculate need , show it. suppose use while,for, , loop program.
so far have been successful loop, having problem how use while , loop program.
can give me advice?
here codes :
#define _crt_secure_no_warnings #include<stdio.h> #include<stdlib.h> float load() { float sal = 0.0; printf("enter salary\n"); scanf("%f", &sal); return sal; } float calcrate(float s) { if (s > 40000) return 4.0; if (s >= 30000 && s <= 40000) return 5.5; if (s < 30000) return 7.0; } void calcraise(float sal, float rate, float *raise, float *totraise) { *raise = (sal*rate) / (float)100; *totraise = *totraise + *raise; } void calcnewsal(float sal, float raise, float *newsal, float *totnewsal) { *newsal = sal + raise; *totnewsal = *totnewsal + *newsal; } void calctotsal(float *sal, float *totsal) { *totsal = *totsal + *sal; } void print(float sal, float rate, float raise, float newsal, float totnewsal, float totraise, float totsal) { printf(" %0.2f %0.2f %0.2f %0.2f\n", sal,rate,raise,newsal); } void main() { float sal = 0.0; float rate, raise, newsal; float totraise = 0; float totnewsal = 0; float totsal = 0; printf(" salary rate %% raise new salary\n"); (int i=1;i<=7;i++) { sal = load(); rate = calcrate(sal); calcraise(sal, rate, &raise, &totraise); calcnewsal(sal, raise, &newsal, &totnewsal); calctotsal(&sal, &totsal); print(sal, rate, raise, newsal, totsal, totraise, totnewsal); fflush(stdin); } printf("total: %0.2f %0.2f %0.2f \n", totsal, totraise, totnewsal); system("pause"); }
you can use while loop follows:
int i=1; while(i<=7) { sal = load(); rate = calcrate(sal); calcraise(sal, rate, &raise, &totraise); calcnewsal(sal, raise, &newsal, &totnewsal); calctotsal(&sal, &totsal); print(sal, rate, raise, newsal, totsal, totraise, totnewsal); fflush(stdin); i++; } and do-while follows:
int i=1; { sal = load(); rate = calcrate(sal); calcraise(sal, rate, &raise, &totraise); calcnewsal(sal, raise, &newsal, &totnewsal); calctotsal(&sal, &totsal); print(sal, rate, raise, newsal, totsal, totraise, totnewsal); fflush(stdin); i++; } while(i<=7); both of above have same effect loop you've written. number of iterations hardcoded here there shouldn't apparent difference between while & do-while. however, if initialize 8 instead of 1 notice while loop block not execute @ do-while executes once.
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