The following example shows how to call the system service to read in a string o

ID: 655208 • Letter: T

Question

The following example shows how to call the system service to read in a string of characters from the keyboard.

.data

buffer: .space 60 #Allocate n bytes of space in the data segment

main:

li $v0, 8 #system call code Read String

la $a0, buffer #$a0 is a pointer to an input buffer

li $a1, 60 #specifies the maximum length of input buffer

syscall

Program

Write a C program that will read in a string of characters (60 characters or less) and will print out the string in reverse. For example the string

#include<stdio.h>

#include<string.h>

int main() {

char str[100], temp;

int i, j = 0;

printf(" Enter the string :");

gets(str);

i = 0;

j = strlen(str) - 1;

while (i < j) {

temp = str[i];

str[i] = str[j];

str[j] = temp;

i++;

j--;

}

printf(" Reverse string is :%s", str);

return (0);

}

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